Question

(30 $a^{4} b^{6}$ ) : (2$ab$ - 15$ab$)

Answer 1

Simplificando:
$(30 a^4b^6) : (2ab - 15ab) = \\ \\ = (30 a^4b^6) : (- 13ab) = \\\\ = \frac{30 a^4b^6}{- 13ab} = \\ \\ = - \frac{30a^3b^5}{13}$